HiLight P5C Red Laser sight and 500 lm Tactical Flashlight Combo for Pistols and Rifles, Battery Included High quality CREE XM-L2 LED with 400 lumen output using 1x CR2 battery(included) Max steady output of 500 lumens with option of steady on or Strobe Red Laser Beam intensity/wavelength: &lt;5 mW peak, 532 nm, Class III R Fits regular size and subcompact handguns with Picatinny/Weaver rails Red laser meets FDA safety standards; the red laser is adjustable Windage and Elevation with Allen wrench included.